CT, MRI, and EBCT are competing techniques for non-invasive coronary artery imaging, each with advantages and disadvantages. MR angiography has improved in recent years but still has limited spatial and temporal resolution and high costs. Studies have shown CT and EBCT can detect coronary artery calcium and accurately characterize plaque, with EBCT able to quantify plaque burden. Multi-slice CT has increasing diagnostic accuracy for coronary stenosis compared to invasive angiography. Advances in CT and MRI continue to improve non-invasive assessment of coronary arteries and plaque components.